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Hillbilly_Hybrid Hillbilly_Hybrid is online now

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Showing Visitor Messages 1 to 4 of 4
  1. braveheartwallace
    01-10-2019 11:35 AM - permalink
    Hello Hillbilly,

    I read one of your comments from November about disabling the AFM/cylinder deactivation on the hybrid tahoe/yukon, etc.

    "There is a 5-Way plug way in the back of the engine not too far from oil pressure sender. If you un-plug it. No AFM. There will be codes and a CEL."

    My engine runs incredibly rough on V4/afm mode. Almost certain I have the oil problem leading to dirty plugs... I want to disable it.

    Is there another knowledge I should take with me before I go search for the 5 way plug and disconnect it?
  2. shitBoxFixerUpper
    09-26-2018 10:47 AM - permalink
    Hi Hillbilly,

    I've searched several threads and you seem to be very knowledgeable regarding the GM Hybrids. I have a 2008 GMC Yukon Hybrid with 98K miles that intermittently stalls at idle. It has kicked several hybrid codes along with the p0420 cat code. We pulled the hybrid battery, disconnected and tested each module individually and they all tested around 8.2v, which I believe is good. There is a TSB for broken or crimped wires and some suggest the control module as a fix on the tech lines, but I thought I'd check with you before throwing parts at it. Should I take this thing to GM or can it be diagnosed by my independent?
  3. Tahoe_woes
    01-04-2018 01:28 PM - permalink
    Man you have wrote or commented on about every issue I have had. My 2008 tahoe jerks and lunges when switching from hybrid to gas, it sometime revs up at a stop to 2000 rpms for no reason, and now the oil pressure has began to drop slowly (oil pressure sensor screen I think) I am in north Alabama by Huntsville and nobody wants to touch this thing. Where are you located because I would drive a good bit to get someone like you to work on this monster for me.
  4. tiktok4321
    03-21-2017 07:46 AM - permalink
    Hey there HH,

    I don't know if you saw my post regarding my Hybrid Tahoe on Sunday. Could a misfiring cylinder wreck havoc on my hybrid system?

    Thanks for any help you can send my way...

About Me

  • About Hillbilly_Hybrid


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  • Last Activity: Today 07:38 AM
  • Current Activity: Viewing Thread New Owner Learning
  • Join Date: 09-03-2009
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